THE EFFECT OF INCREASING TEMPERATURE ON K-EFF FOR FISSILE MATERIAL OUTSIDE REACTORS

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Nuclear Criticality Safety Evaluations typically employ room temperature cross sections, material densities, and dimensions. Processes that have been and are in development for conversion of legacy wastes in tanks, e.g., Waste Treatment Project (WTP) at the Hanford Remediation Site and Defense Waste Processing Facility (DWPF) at the Savannah River Site, utilize melters that operate at elevated temperatures, 1500 to 1900 C. The applicability of room temperature data to processes such as these has been questioned. Also questioned was the applicability of room temperature data for the analyses across the Savannah River Site (SRS) where the temperature may be elevated, such ... continued below

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Kessler, S. June 9, 2009.

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Nuclear Criticality Safety Evaluations typically employ room temperature cross sections, material densities, and dimensions. Processes that have been and are in development for conversion of legacy wastes in tanks, e.g., Waste Treatment Project (WTP) at the Hanford Remediation Site and Defense Waste Processing Facility (DWPF) at the Savannah River Site, utilize melters that operate at elevated temperatures, 1500 to 1900 C. The applicability of room temperature data to processes such as these has been questioned. Also questioned was the applicability of room temperature data for the analyses across the Savannah River Site (SRS) where the temperature may be elevated, such as in a postulated fire. This analysis was performed to examine the effect of temperature over the relatively small range encountered in normal and abnormal operations at SRS that does not include DWPF melters. This analysis documented herein is limited to fast systems of fissile metal and oxide cylinders on concrete at temperatures no greater than 640 C, the melting point of plutonium. Because thermal expansion data for various types of structural materials was not readily available, structural materials were not included in the analysis.

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  • Report No.: SRNS-TR-2009-00219
  • Grant Number: DE-AC09-08SR22470
  • DOI: 10.2172/961606 | External Link
  • Office of Scientific & Technical Information Report Number: 961606
  • Archival Resource Key: ark:/67531/metadc934031

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  • June 9, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 11:22 p.m.

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Kessler, S. THE EFFECT OF INCREASING TEMPERATURE ON K-EFF FOR FISSILE MATERIAL OUTSIDE REACTORS, report, June 9, 2009; South Carolina. (digital.library.unt.edu/ark:/67531/metadc934031/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.